US3375461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic frequency control loop with frequency scanning
Assignee: International Standard Electric Corp
•
Filing: 1966-06-06
•
Granted: 1968-03-26
•
Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Ribour Jean Louis
- 👤 Hardouin Lucien Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:58
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/10; H03L7/12; H03L7/16; H03L7/18; H03L7/183; H03L7/187; H03L7/189; H03L7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3164777A
Cited
US3259851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |